Providing liquity on the IB API

IB is a great brokerage, however the only problem is that if you route via the API and DO NOT choose SMART you are charged .013 / share.

I'm debating on which brokerage to join. Because my strategies are mainly provide liquity strategies and I do decent volume I want the unbundled rate. Therefore it is quite beneficial to provide @ the ECNs mostly ARCA, and take on NYSE. Now how smart is SMART? When you provide what % of the time does it route to the ECNs vs NYSE and when you take what % of the time does it route to NYSE vs ECNs.

I know this is kinda a very hard to answer question, but it's very important deciding factor.